Display screen or portion thereof with graphical user interface



FIG. 1 is a front view of the display screen or portion thereof with graphical user interface, showing my new design; in an alternate environment, and,

FIG. 2 is a front view of the display screen or portion thereof with graphical user interface, showing my new design; in an alternate environment.

In the drawings, the broken lines are for the purpose of illustrating a display screen or portion thereof with graphical user interface that forms no part of the claimed design. 

CLAIM The ornamental design for graphical user interface for a display screen or portion thereof, as shown and described. 